linux-kernel - Re: [PATCH v4 1/2] PCI: layerscape: Add support for Link down notification

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Message-ID: <ZMfN9w6ixBFBmof7@lizhi-Precision-Tower-5810>
Date:   Mon, 31 Jul 2023 11:06:31 -0400
From:   Frank Li <Frank.li@....com>
To:     lpieralisi@...nel.org
Cc:     Zhiqiang.Hou@....com, bhelgaas@...gle.com, imx@...ts.linux.dev,
        kernel-janitors@...r.kernel.org, kw@...ux.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        mani@...nel.org, markus.elfring@....de, minghuan.Lian@....com,
        mingkai.hu@....com, robh@...nel.org, roy.zang@....com,
        xiaowei.bao@....com
Subject: Re: [PATCH v4 1/2] PCI: layerscape: Add support for Link down
 notification

On Thu, Jul 20, 2023 at 09:58:33AM -0400, Frank Li wrote:
> Add support to pass Link down notification to Endpoint function driver
> so that the LINK_DOWN event can be processed by the function.
> 
> Acked-by: Manivannan Sadhasivam <mani@...nel.org>
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---

@Lorenzo

Could you please consider pick both patches?
Manivannan already reviewed and only impact layerscape.

Frank

> Change from v2 to v4
>  - none
> Change from v1 to v2
> 
>  drivers/pci/controller/dwc/pci-layerscape-ep.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> index de4c1758a6c3..e0969ff2ddf7 100644
> --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> @@ -89,6 +89,7 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
>  		dev_dbg(pci->dev, "Link up\n");
>  	} else if (val & PEX_PF0_PME_MES_DR_LDD) {
>  		dev_dbg(pci->dev, "Link down\n");
> +		pci_epc_linkdown(pci->ep.epc);
>  	} else if (val & PEX_PF0_PME_MES_DR_HRD) {
>  		dev_dbg(pci->dev, "Hot reset\n");
>  	}
> -- 
> 2.34.1
>